In the 1985 12-issue comic booklimited seriesCrisis on Infinite Earths, Pariah (real name Kell Mossa) was one of the greatest scientists from his version of Earth (retconned as an alternate dimension rather than a parallel Earth).[1] Pariah's unorthodox experiments to view the creation of the Universe result in the Anti-Monitor learning of the existence of his Earth and destroying it with waves of anti-matter. He survived, through the intervention of the Anti-Monitor's benevolent counterpart, the Monitor, and acquired the ability to travel from one alternate Earth to another, forced to witness untold millions perish. During the Crisis, Lady Quark is saved by Pariah before the anti-matter destroys her universe, making her the lone survivor of Earth-6.[2] Pariah blames himself for the destruction of his own world, the release of the Anti-Monitor, and the subsequent destruction of universe after universe, until he finally learns he was essentially blameless. Pariah is told by the Anti-Monitor that his scientific investigation did not unleash forces great enough to destroy a universe. Pariah merely opened the antimatter portal to the dawn of time. Taking advantage of Pariah's experiment, the Anti-Monitor converted antimatter into energy, then focused it onto Pariah's universe. The destruction of those worlds allowed the gathering of more energy, which then made the Anti-Monitor strong enough to break free of his prison.[3] After the destruction of the Anti-Monitor, the reformed earth is safe. Pariah, and Lady Quark, ask Harbinger to join them in exploring the new earth. Harbinger agrees to accompany them on their journey. As the three disembark, Harbinger tells them she is hopeful of the future and what it might bring.[4]

Pariah was seemingly indestructible and immortal, but relatively powerless in terms of his physical capabilities (although he also appeared capable of flight), and he considers the powers he has a curse, since they doom him to witness horrors he cannot stop.

As part of the Blackest Night event, Pariah's corpse is reanimated by a black power ring and recruited to the Black Lantern Corps. He appears in Blackest Night #2 (October 2009), interrupting a cadre of mystical heroes gathered to investigate the strange occurrences of the event and again in Green Lantern #45 as the black rings restore the planet Xanshi.

Pariah can be seen inside a cell within "the Circus" prison of A.R.G.U.S. [7]